Extra power spring - Griffin Armament Extra Power Buffer Spring

This is an awesome product that I purchased because Optics Planet did not carry the Sprinco line. I put it in my AR .45 and found it too powerful with the 9 oz. buffer and began seeing bolt-bounce and doubling. Will try getting a 6 or 6.5 oz. pistol buffer and retry the set-up. It is definitely worth the money and is probably as good as a Sprinco.